Refactor lithium CheckSmi instruction into two separate instructions CheckSmi...

src/arm/lithium-arm.cc

Index: src/arm/lithium-arm.cc
===================================================================
--- src/arm/lithium-arm.cc	(revision 7203)
+++ src/arm/lithium-arm.cc	(working copy)
@@ -1667,7 +1667,7 @@
 
 LInstruction* LChunkBuilder::DoCheckNonSmi(HCheckNonSmi* instr) {
   LOperand* value = UseRegisterAtStart(instr->value());
-  return AssignEnvironment(new LCheckSmi(value, eq));
+  return AssignEnvironment(new LCheckNonSmi(value));
 }
 
 
@@ -1688,7 +1688,7 @@
 
 LInstruction* LChunkBuilder::DoCheckSmi(HCheckSmi* instr) {
   LOperand* value = UseRegisterAtStart(instr->value());
-  return AssignEnvironment(new LCheckSmi(value, ne));
+  return AssignEnvironment(new LCheckSmi(value));
 }